Feb 6, 2013 5:30pm PST
literally paralyze the country. >> pelley: now, the pentagon set up a cyber command to practice both offense and defense on the computer battlefield. now cyber command is expanding five-fold, and we asked bob orr to look into who's behind the computer threat. >> reporter: despite its imposing facade, the u.s. federal reserve could not stop the latest attack. on sunday, hackers broke into a fed computer system then stole and published the private phone numbers of 4,000 u.s. bankers. that breach followed recent revelations that cyber spies had also infiltrated computer networks at three american newspapers: the "washington post," "wall street journal," and "new york times." investigators traced those attacks on the papers to government-backed hackers in china looking to monitor coverage of chinese politics. everyday, state-sponsored spies- - the majority from china-- are infiltrating key government and business computer networks inside the united states. u.s. cyber command estimates american companies are losing $250 billion a year in intellectual property. how often are they coming after us?